X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 25 Aug 2009 06:17:43 -0400 Message-ID: X-Original-Return-Path: Received: from [69.146.254.20] (HELO arilabs.net) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3823513 for lml@lancaironline.net; Mon, 24 Aug 2009 23:12:34 -0400 Received-SPF: none receiver=logan.com; client-ip=69.146.254.20; envelope-from=Kevin@arilabs.net Content-class: urn:content-classes:message Subject: Re: [LML] Fuel Flow Issue Solved MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CA2531.CFD18598" X-Original-Date: Mon, 24 Aug 2009 21:12:00 -0600 X-MimeOLE: Produced By Microsoft Exchange V6.5 X-Original-Message-ID: <7141427652BB3049A7DBF1084B67805B33C62F@penumbra.arilabs.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] Fuel Flow Issue Solved Thread-Index: AcolK039zsXHNFalTSCEkSspccKlOAABoZrk From: "Kevin Stallard" X-Original-To: This is a multi-part message in MIME format. ------_=_NextPart_001_01CA2531.CFD18598 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Nice job Scott. Way to go. That sounds like a lot of work. Thank you = for passing along your discovery. Kevin Kevin Stallard President Aerial Robotics, Inc. 970.201.1804 (cell) 970.464.4855 (office) -----Original Message----- From: Lancair Mailing List To: lml@lancaironline.net Sent: Mon Aug 24 20:25:11 2009 Subject: [LML] Fuel Flow Issue Solved Hello Everyone, =20 I just thought I would update everyone on my Fuel Flow issue. About a month back I asked for advise about a sudden lack of fuel flow. Where I used to get 20-21gph on Take off I has suddenly getting = 12-14gph. All run ups were normal but when applying full power for takeoff I would = not get enough flow. When initiating the Electric fuel pump everything = turned to=20 normal. =20 Well this problem turned into quit the hunt to find the issue. To make a long story short I had disassembled and reassembled the = majority of the fuel system from the: Engine driven fuel pump Throttle control unit Manifold spider valve Injectors and lines gascolator fuel flow meter all fuel lines tank vents Electric fuel pump =20 What did it come down to?? =20 A broken O-ring on the inlet side of the Electric Fuel pump fitting. Air was being sucked into the system. I finally discovered it by = putting a vaccum on the fuel lines from the engine to the tanks. When a vaccum could not = be held I traced it to the O-ring. =20 Four weeks of down time and about 80hrs of work to find the .50 cent = problem. Of course I had to reset all my flows of which I now get 24gph and 22psi = on Takeoff. =20 Now I am still not using my Electric Boost for Take Off. Should I or = should I not??? What is the concensis of people in the know. =20 Thanks to everyone whom gave me some input. =20 Scott Keighan L-IV IO-550G =20 =20 ------_=_NextPart_001_01CA2531.CFD18598 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Re: [LML] Fuel Flow Issue Solved

Nice job Scott.  Way to go.  That sounds = like a lot of work.  Thank you for passing along your = discovery.

Kevin
Kevin Stallard
President
Aerial Robotics, Inc.
970.201.1804 (cell)
970.464.4855 (office)




-----Original Message-----
From: Lancair Mailing List <lml@lancaironline.net>
To: lml@lancaironline.net <lml@lancaironline.net>
Sent: Mon Aug 24 20:25:11 2009
Subject: [LML] Fuel Flow Issue Solved

Hello Everyone,

I just thought I would update everyone on my Fuel Flow issue.
 About a month back I asked for advise about a sudden lack of fuel = flow.
Where I used to get 20-21gph on Take off I has suddenly getting = 12-14gph.
All run ups were normal but when applying full power for takeoff I would = not
get enough flow.  When initiating the Electric fuel pump everything = turned to
normal.

Well this problem turned into quit the hunt to find the issue.
To make a long story short I had disassembled and reassembled the = majority of
the fuel system from the:
Engine driven fuel pump
Throttle control unit
Manifold spider valve
Injectors and lines
gascolator
fuel flow meter
all fuel lines
tank vents
Electric fuel pump

What did it come down to??

A broken O-ring on the inlet side of the Electric Fuel pump fitting.
Air was being sucked into the system.  I finally discovered it by = putting a vaccum
on the fuel lines from the engine to the tanks.  When a vaccum = could not be held
I traced it to the O-ring.

Four weeks of down time and about 80hrs of work to find the .50 cent = problem.
Of course I had to reset all my flows of which I now get 24gph and 22psi = on Takeoff.

Now I am still not using my Electric Boost for Take Off.  Should I = or should I not???
What is the concensis of people in the know.

Thanks to everyone whom gave me some input.

Scott Keighan
L-IV   IO-550G 

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